Since I have too much time for doing silly things, I created a couple of designs (mainly for t-shirts but they can also be printed as posters) for your judgment. If you like them, you can take them for free here https://www.dropbox.com/sh/9mkncnnu5ak9 ... 6G9Ha?dl=0 and use whatever you'd like.

Click to full-size:

It will look like this when printed on t-shirts

The second one

Will look like this on t-shirts

All artwork is 100% mine, the fonts used are 100% free, no copyright issues expected.